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'90 Chevy Lumina 3.1 crank/no start when warm.

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Old Sep 8, 2015 | 10:02 PM
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GMCotech2's Avatar
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Default '90 Chevy Lumina 3.1 crank/no start when warm.

When the engine reaches operating temperature and is intentionally turned off it will not start up again. On a cold start, the car will crank, start, and drive normally. The car will operate normally even after reaching operating temperature. The problem only occurs after turning the car off. I have good fuel pressure (approx 40 psi) cranking and running. I have even done an injector drop test to insure injectors are actually operating individually. I have good spark. I have attached the computer and I have RPM during cranking (crank sensor test). Has new MAP sensor. Any ideas???
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Old Jan 14, 2017 | 11:21 PM
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MCRC007's Avatar
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If you think its the fuel injectors you can always put them through a couple tests. Try these three tests in this video
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